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    • Today

      Sep 25

      59° /34°
      Mostly sunny and cool
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Sep 26

      63° /50°
      Sunny to partly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      66° /44°F
      A little rain in the morning
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Wed

      Sep 28

      67° /50°
      Times of clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      63° /52°
      Mainly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Tuesday
    9am
    10am
    11am
    12pm
    1pm
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    4pm
    Forecast Cloudy Showers Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Partly Cloudy
    Temp (°F) 55° 57° 59° 62° 63° 65° 65° 66°
    RealFeel® 56° 57° 63° 67° 69° 70° 68° 68°
    Wind (mph) 4 SW 4 W 4 W 4 W 5 W 5 WSW 5 WSW 5 WSW
    precip
    9am
    10am
    11am
    12pm
    1pm
    2pm
    3pm
    4pm
    Rain
    41%
    48%
    40%
    34%
    29%
    20%
    20%
    20%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    9am
    10am
    11am
    12pm
    1pm
    2pm
    3pm
    4pm
    UV Index 0 1 2 2 3 3 2 2
    Cloud Cover 94% 94% 94% 94% 94% 90% 78% 66%
    Humidity 87% 80% 74% 69% 60% 54% 49% 48%
    Dew Point 51° 51° 51° 51° 49° 48° 46° 46°
    Temp °F
    9am
    10am
    11am
    12pm
    1pm
    2pm
    3pm
    4pm
    70° 65° 60° 55°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 66° 66° N/A 69°
    Low 44° 42° N/A 36°

    Sunrise/Sunset

    • Sunrise: 6:45 AM
    • Sunset: 6:38 PM
    • Duration: 11:53 hr

    Moonrise/Moonset

    • Moonrise: 3:15 AM
    • Moonset: 5:08 PM
    • Duration: 13:53 hr
    Astronomy

    Londonderry Weather Report

    Crisp fall air to bring first frost of season to parts of northeastern US

    September 25, 2016; 2:29 PM ET

    Fall air has finally arrived in the northeastern United States and may yield the first frost of the season in parts of the region to end this weekend. More >

    Tue. Dust & Dander

    Tue. Wind Maps